So did some digging around the internet and found that an exact same issue happened around 2015 september, on horizons daybreaker server exact same thing is happening,
I research something, I log off and when I log back on it doesnt save.

#989 (comment)

Yeah thats the ticket I read, any idea why this is popping up again?

I'm going to need some basic information before we can understand what is going on. Things like;

1. Minecraft version
2. Minecraft Forge version
3. Version of Equivalent Exchange 3 you are using
4. A fml-latest-client log for a play session in which this behaviour occurs (the whole log, not just snippets. Use something like pastee or pastebin)
5. Your player knowledge json file

@pahimar the issue is that FTB Horizons: Daybreaker contains What Is Its EMC - specifically this version.

It was already reported but the issue was just closed - See Lomeli12/WIIEMC#2

This follows along the issue and comment that I linked before.

Ok, so it's not an issue here. Good to know.

Closing.